THE communication from Prof. Wilson Baker and his collaborator1 prompts us to intimate that we also have concerned ourselves with the sydnones, but from the point of view that their formation might be related to the racemization of ñ-acetylaminocarboxylic acids by acetic anhydride. Bergmann and Zervas2 adduced evidence that this change depended on enolization of the anhydro-compound to I.
Wilson Baker 教授和他的合作者1 的来信提示我们,我们也曾关注过昔多
酮类化合物,但是从它们的形成可能与 ±-acetylaminocarboxylic acids 在
乙酸酐作用下的消旋化有关这一角度出发的。Bergmann 和 Zervas2 提出的证据表明,这种变化取决于脱氢化合物烯醇化为 I。